Human Anatomy: Appendicular Skeleton

These flashcards cover key concepts about the appendicular skeleton, including anatomy, functions, and developmental changes.

What are the components of the pectoral girdle?

The pectoral girdle consists of the clavicle and scapula.

How does the pectoral girdle connect to the axial skeleton?

Only the clavicle articulates with the axial skeleton.

What is the main function of the shoulder joint's glenoid cavity?

It allows flexibility but sacrifices stability.

What bones make up the forearm?

The forearm is formed by the radius and ulna.

What is the role of the interosseous membrane?

It interconnects the radius and ulna.

What is the main bone of the arm?

The humerus.

What two bones articulate with the humerus?

The scapula at the shoulder and the radius and ulna at the elbow.

What is the structure and function of the acetabulum in the pelvic girdle?

It is a deep cup that holds the head of the femur.

How many bones are in the hand, and what are their categories?

The hand includes carpals (wrist), metacarpals (palm), and phalanges (fingers).

What type of joint is formed by the humerus and ulna?

A hinge joint that allows bending of the forearm.

What distinguishes male and female pelves?

The female pelvis is adapted for childbearing, being lighter, wider, and shallower.

What is the primary function of the foot?

To support body weight and assist in walking.

What is the composition of the tarsus?

The tarsus consists of seven tarsal bones.

What characterizes the radius in anatomical position?

The radius is lateral, while the ulna is medial.

How does the fibula contribute to the ankle joint?

The fibula stabilizes the ankle joint but does not contribute to the knee joint.

What is the function of the patella?

To protect the knee anteriorly and improve leverage of thigh muscles.

What are the names of the three bones that form the pelvic girdle in childhood?

Ilium, ischium, and pubis.

What happens to the appendicular skeleton during growth?

It increases height and changes body proportions.

What is the significance of the pubic symphysis?

It joins the two pubic bones at the midline with fibrocartilage.

What are the arches of the foot?

The medial longitudinal arch, lateral longitudinal arch, and transverse arch.